County annual report · FIPS 30023
2023 Deer Lodge County, MT Power Outage Report
In 2023, customers in Deer Lodge County, MT went without power for an average of 2.0 hours, a total of 13K customer-hours (Montana average 1.8 hours). That ranks 24th worst of 50 Montana counties and 2303rd of 2,977 nationally.
Compared with MT, the US and 2022
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Deer Lodge County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 7, 2023 09:30 | August 7, 2023 17:45 | 8h 15m | 1,437 | 2,987 |
| 2 | December 6, 2023 18:15 | December 6, 2023 21:00 | 2h 45m | 1,190 | 2,125 |
| 3 | July 21, 2023 01:30 | July 21, 2023 04:45 | 3h 15m | 569 | 1,058 |
| 4 | February 1, 2023 04:15 | February 1, 2023 05:30 | 1h 15m | 504 | 579 |
| 5 | May 24, 2023 23:30 | May 25, 2023 00:15 | 45m | 317 | 83 |
| 6 | October 29, 2023 19:15 | October 29, 2023 20:30 | 1h 15m | 316 | 395 |
| 7 | June 17, 2023 20:00 | June 17, 2023 21:30 | 1h 30m | 305 | 458 |
| 8 | February 21, 2023 10:30 | February 21, 2023 18:15 | 7h 45m | 284 | 655 |
| 9 | July 31, 2023 01:00 | July 31, 2023 05:00 | 4h | 282 | 1,128 |
| 10 | December 27, 2023 21:45 | December 27, 2023 23:30 | 1h 45m | 242 | 162 |
Outage episodes by size in 2023: 11 reached 100+ customers, 2 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Deer Lodge County reported on EIA Form 861 for 2023, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| NorthWestern Energy LLC - (MT) | 2023 | 1.7 hrs | 0.93 | 1.7 hrs | 0.93 |
| Bonneville Power Administration | - | - | - | - | - |
| NorthWestern Energy | - | - | - | - | - |
| Vigilante Electric Coop, Inc | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Montana's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 6,663 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Deer Lodge County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Deer Lodge County, MT annual power outage report, 2023, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2023/montana/deer-lodge-county